Mazda Atenza (Mazda6) Big Brake Kit Upgrade / TTSPORT Classic 9040

The Mazda Atenza (sold as the Mazda6 outside China) isn't short on style, but its naturally aspirated four-cylinder — 192 hp at best in the 2.5L trim — was never going to out-accelerate turbocharged rivals in the same class. What it can do is stop harder and with more confidence, which is exactly what this owner went after: a swap from the factory brakes to a TTSPORT TT9040 six-piston forged big brake kit.

The build is straightforward: a TT9040 six-piston forged caliper, a 355x32mm high-carbon heat-treated slotted rotor, and TTSPORT stainless steel brake lines, all fitted behind the car's stock 18-inch wheels. No spacers, no clearance surgery — just a bolt-in swap to a much bigger brake.

Vehicle & Kit Specs

Why It Works

A forged caliper body is denser and stiffer than a cast one, so it flexes less under hard braking — that's part of why the pedal firms up once the TT9040 replaces the factory unit. The forged aluminum construction also sheds heat faster than cast iron, which matters more the harder the car is driven.

• Six opposed pistons spread clamping force more evenly across the pad than the factory caliper, which helps consistency and pedal feel.
• The 355x32mm rotor is substantially larger than stock, adding thermal mass and swept area to resist fade under repeated stops.
• The kit is designed to clear the Atenza's factory 18-inch wheels, so there's no need for spacers or wheel changes.
• Stainless steel lines resist the swelling that rubber lines can develop under heat and pressure, keeping pedal response consistent.

Installation Gallery

FAQ